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Wednesday, July 20, 2022

[FIXED] How can I use JavaScript to limit a number between a min/max value?

 July 20, 2022     integer, javascript, numbers     No comments   

Issue

I want to limit a number between two values, I know that in PHP you can do this:

$number = min(max(intval($number), 1), 20);
// this will make $number 1 if it's lower than 1, and 20 if it's higher than 20

How can I do this in javascript, without having to write multiple if statements and stuff like that? Thanks.


Solution

like this

var number = Math.min(Math.max(parseInt(number), 1), 20);

Live Demo:

function limitNumberWithinRange(num, min, max){
  const MIN = min || 1;
  const MAX = max || 20;
  const parsed = parseInt(num)
  return Math.min(Math.max(parsed, MIN), MAX)
}

alert(
  limitNumberWithinRange(  prompt("enter a number")   )
)



Answered By - Govind Malviya
Answer Checked By - Marilyn (PHPFixing Volunteer)
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